Investigation of sulfur-tolerant catalysts for selective synthesis of hydrocarbon liquids from coal-derived gases. Quarterly technical progress report, September 18-December 18, 1979

Technical Report · Thu Jan 10 00:00:00 EST 1980

DOI:https://doi.org/10.2172/5452231· OSTI ID:5452231

Bartholomew, C. H.

Three catalysts were prepared: 3% Co/SiO/sub 2/, 3% Fe/SiO/sub 2/, and a 10% cobalt boride on alumina designated respectively as Co-S-101, Fe-S-100, and CoB-A-101. These catalysts were prepared in the following manner: analytically pure Co(NO/sub 3/)/sub 2/ . 6H/sub 2/O and Fe(NO/sub 3/)/sub 3/ . 9H/sub 2/O salts and commercial Cab-O-Sil silica were used to prepare the 3% silica-supported cobalt and iron catalysts. Samples were prepared by simple impregnation to incipient wetness with aqueous metal salt solutions. Several impregnations were necessary to ensure a uniform deposition of the metal salt, each followed by intermediate drying. After the final impregnation, the catalysts were dried in an oven at 355 to 375/sup 0/K for 24 h. These dried samples were then bulk reduced in flowing hydrogen at a space velocity of 2000 h/sup -1/. The temperature was raised during reduction at a rate of 1.5 to 2.0 K/min until 725/sup 0/K was attained, then held for 12 h. The reduced catalysts were next passivated with 1% air in nitrogen and crushed to a fine powder for use. The cobalt boride on alumina catalyst (CoB-A-101) was prepared under an N/sub 2/ blanket in a sealed reaction vessel to avoid the formation of boron oxide, which cannot be reduced in flowing H/sub 2/ even at 675/sup 0/K. Enough alumina was used so that if all the cobalt adhered to the support 18 wt % metal loading would result. From previous experience we estimate a loading of about 10 wt %; this is currently being checked by chemical analysis.

• Research Organization: Brigham Young Univ., Provo, UT (USA)
• DOE Contract Number: AC01-79ET14809
• OSTI ID: 5452231
• Report Number(s): FE-14809-1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
10 SYNTHETIC FUELS
CATALYSTS
CHEMICAL PREPARATION
FISCHER-TROPSCH SYNTHESIS
BORIDES
CATALYTIC EFFECTS
COBALT
IRON
PERFORMANCE TESTING
SPECIFICITY
BORON COMPOUNDS
CHEMICAL REACTIONS
ELEMENTS
METALS
SYNTHESIS
TESTING
TRANSITION ELEMENTS
010404* - Coal
Lignite
& Peat- Gasification
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
090121 - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)